What color is a masthead light on a ship?

• A. Blue
• B. Green
• C. White
• D. Red

Answer: (C)

The masthead light on a ship is white, primarily serving a critical function in navigation and safety. It is positioned at the front of the ship and is visible from the front and sides when the ship is under way. The purpose of the masthead light is to indicate the presence of a vessel to other ships, especially at night or in low visibility conditions.

This white light is required by international maritime regulations to be displayed on all vessels over a certain size, ensuring that other vessels can determine the direction and movement of the ship. The visibility of the masthead light is crucial for collision avoidance and helps define the parameters of the ship's heading. This adherence to safety standards is what ensures that maritime operations can be conducted in a safe and organized manner.